Create stub GrAuditTrail class

Create stub GrAuditTrail class

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1572553002

Committed: https://skia.googlesource.com/skia/+/27a48dc0cddad7f3531dcf0d39d290e7233e3e76

[joshua.litt, 2016-01-08 14:27:25]

Description was changed from

==========
Create stub GrAuditTrail class

BUG=skia:
==========

to

==========
Create stub GrAuditTrail class

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[joshualitt, 2016-01-08 14:28:38]

joshualitt@google.com changed reviewers:
+ bsalomon@google.com, joshualitt@google.com, robertphillips@google.com

[joshualitt, 2016-01-08 14:28:38]

This is a second attempt at this.  Next up I'll start mucking with the trace
macros in SkGpuDevice.

[bsalomon, 2016-01-08 14:33:27]

lgtm

[robertphillips, 2016-01-08 14:42:30]

lgtm

[joshualitt, 2016-01-08 15:01:35]

The CQ bit was checked by joshualitt@google.com

[joshualitt, 2016-01-08 15:01:35]

The patchset sent to the CQ was uploaded after l-g-t-m from bsalomon@google.com,
robertphillips@google.com
Link to the patchset: https://codereview.chromium.org/1572553002/#ps20001
(title: "minor nit")

[commit-bot: I haz the power, 2016-01-08 15:01:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1572553002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1572553002/20001

[commit-bot: I haz the power, 2016-01-08 15:19:50]

Description was changed from

==========
Create stub GrAuditTrail class

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Create stub GrAuditTrail class

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/27a48dc0cddad7f3531dcf0d39d290e7233e3e76
==========

[commit-bot: I haz the power, 2016-01-08 15:19:50]

Committed patchset #2 (id:20001) as
https://skia.googlesource.com/skia/+/27a48dc0cddad7f3531dcf0d39d290e7233e3e76